Breathing mask



FIG. 1 is a front view of a breathing mask.

FIG. 2 is a left side view of the breathing mask shown in FIG. 1.

FIG. 3 is a right side view of the breathing mask shown in FIG. 1.

FIG. 4 is a top view of the breathing mask shown in FIG. 1.

FIG. 5 is a bottom view of the breathing mask shown in FIG. 1.

FIG. 6 is a rear perspective view of the breathing mask shown in FIG. 1; and,

FIG. 7 is a bottom front perspective view of the breathing mask shown in FIG. 1. 

CLAIM The ornamental design for a breathing mask, as shown and described. 